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(Ne Model.)

48heets-Sheet 1. G. L. ANDERSON & (LP. REED;

ELEVATGR.

Patented July 7, 1885.

4 Sheets-Sheet 3.

ELEVATOR.

Patented Jlily 7,

m w nnm i lj l 0. L. ANDERSON'8z 0,. F. REED.

(No Model.)

(No Model.) 4 Sheets-Sheet 4. 0.1,. ANDERSON & 0.; F. REED.

ELEVATOR.

No. 321,567. ,Patented July 7, 1885.

UNITED STATES PATENT Orrics.

- CHARLES L. ANDERSON, OF NEWV YORK, N. Y., AND CHARLES F. REED, OFGREENE, MAINE, ASSIGNORS TO THE ELEVATOR SAFETY AND MOTOR ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 321,567, dated July 7,1885.

To aZZ whom it may concern:

Be be it known that we, CHARLES L. AN- DERSON, of New York city, in thecounty and State of New York, and CHARLES F. REED,

of the town of Greene, in the county of An droscoggin and State ofMaine, have invented a certain new and useful Improvement in Elevators,of which the following is a specifiation.

Our invention relates to safety devices for passenger and freightelevators, for preventing the descent of the elevator-car should thehoist-rope or other portion of the hoisting apparatus give way.

The invention is an improvement upon the :5 safety device covered byPatent No. 305,689, dated September 23, 1884. Our object is to provide amore suitable engaging-support for the frictional gripping devices thanthe rods described in said Patent, and also to improve the efficiency ofthe gripping devices themselves, and to provide means for connecting thegripping devices with the hoisting apparatus of an elevator, having twoor more hoist-ropes passing around the car, so that the safety de vicecan he applied to such an elevator without disturbing or changing thehoisting apparatus, and, when so applied, will be brought into action bythe breaking of any one of the two or more hoistropes.

In the accompanying drawings, forming a part hereof, Figure l is anelevation of an elevator-car, with simple form of hoisting apparatus,the gripping-jaw on one side and the guides on both sides being insection; Fig. 2, a vertical section of the top of an elevator-car withfour hoist-ropes; Fig. 3, a top View of this car; Fig. 4, a section online 4 4 in Fig. 5 of the compound gripping device used with theapparatus of Figs. 2 and 3, the wedges and rollers being in elevation;Fig. 5, a top view of this compound gripping device, the wedges being inhorizontal section; Fig. 6, an elevation of one of the supportingsaddles for connecting the gripping devices with the hoistropes of Figs.land 3; Fig. 7, an elevation of grip-cable, showing end connections insection; and Fig.8 a perspective view showing a dif ferent way ofsecuring the cable at its upper end.

Like letters denote corresponding parts in all the figures.

We employ for each elevator-shaft two or more wire cables, A. Thesecables are hung (No model.)

from the top of the shaft upon a cross-beam,

B, or from any suitable or convenient support 5 5 which is strong enoughto bear the strain caused by stopping a descending car. The cables maypass through the beam and be secured in eye-blocks a, resting on thebeam or hung from above, or the cables may be passed around the beam andbe properly secured. At the bottom of the shaft the cables pass throughfloortimbers G, and are strained by weight-levers b. This constructionpermits of the elongation and shortening of the cables under variationsin temperature while maintaining them under strain.

Upon the sides of the car, near the top thereof, (Fig. 1,) areguiding-eyes D, through which the cables pass, while to the bottom ofthe car are secured the gripping-jaws E. The cables pass through thesegripping-jaws, which sur round such cables. In each. jaw, next to theinner side of the cable, is a loose gib, F, which bears upon the cablethe entire width vertically of thejaw, and has a cross-pin, c, at itsupper end, or an enlarged head to prevent it from dropping out of thejaw. Back of the gib in the jaw is the vertical wedge G, and between thewedge and gib is the friction-roller H. A pin (1 on thelower end of thewedgeprevents the roller from dropping out of the jaw, while across-pin, e, throws the roller normally over against the wedge and outof contact with the gib. The wedges G of the opposite jaws are connectedwith vertical rods, f, hung from horizontal pivoted levers, g, on top ofcar. The hoist-rope I is connected with these levers, and the weight ofthe car raises the levers and holds up the wedges. Should the hoist-rope0 break the levers g, rods f, and wedges G drop by gravity and throw therollers against the gibs. The gibs ride upa short distance in the jawswith the cables, the gripping strain constantly increasing until the caris stopped. The gibs project far enough below the jaws, as shown, sothat when the car is stopped the lower ends of the gibs will not bewholly within the jaws, and the frictional bearing on the cables will bethe whole width vertically of the jaws. When the hoist-rope is repairedor replaced, the gripping devices will be released and will drop back totheir normal position by the hoisting of the car. The wire cables, as agripping-support, can be used in elevator-shafts of any height.

To secure strength and insure a positive action of the gripping devices,it is necessary that the gripping jaws should surround the supports.

In shafts of considerable height the rods of the patent referred tocannot be handled in one piece, and when in position produce a noise asthe elevator-ear moves. The wire cables, being flexible, arecomparatively noiseless, can be handled in one piece the requiredlength, and are strong.

The cables may be used as guides for the car, as well as for agripping-support, although the eyes D might be used when the car hasother guides than the cables.

For the elevator car shown in Figs. 2 and 3 four hoist-ropes, I, areemployed. These pass under wheels h, secured to the top of the car atits center, and then pass horizontally over rollers t, and down aroundthe sides of the car to the bottom of the same. v

We support our gri pping-wedges by saddles K K, resting upon thehorizontal portions of these hoist-ropes, between wheels h and rollers2'. Each saddle rests upon two of the hoistropes. Levers 7c are pivotedin these saddles, such levers having a number of pivotholes, If, so thatthe saddles can be adjusted to the proper points on the ropes. The innerends of these levers are secured loosely to supports k so that thelevers can move vertically and laterally, and can rock on such supportsto a limited extent. The outer ends of levers k is are secured to leversZ Z, arranged at right angles to 70 k above the sides of the ear. LeversZ Z are fulcrumed at joints in m, and at the ends of their longer armsare connected by vertical rods with the wedges of the diagonallyoppositecompound gripping devices. The ends of the shorter arms of levers Z Zare connected with other levers, n n, fulcrumed at 0 0, which levers a nare connected by vertical rods with the other wedges of the compoundgripping devices. If any one of the hoist-ropes should break-say oneunder saddle Kthat saddle would tilt sidewise, lowering the outer end oflever k, and dropping wedges of both grippingjaws through levers Z anda. The breaking of both ropes under K would permit it to drop with thesame effect as that just described; hence any injury to the hoist-ropeunder either saddle serves to throw in two wedges of the oppositegripping-jaws and. to grip upon both cables. An injury or slackening upof hoist-ropes under both saddles would throw in the four wedges. Thecompound gripping device used with this form of elevator yet remains tobe described. It is shown in detail in Figs. 4 and 5. The jaw L of thisdevice is a rectangular box open at top and bottom, and cast or wroughtof steel or iron, which box is secured to a bracketcasting, L, by whichthe grippingjaw is attached to the bottom of the car. The cable passes.centrally through box L, and on each side of the cable is a loose gib,F. Back of the gibs the corners of the box are provided with plates, 1),which form shoulders, against which the gibs bear when forced back. Ifthe box is cast of iron or steel, these shoulders 12 will be cast in onepiece with the rest of the box. Between the plates 19, at each side ofthe box, is a wedge, G, and roller, H. WVhen both wedges are dropped atthe same time, both gibs are forced forward upon the cable and grip itsecurely between them; but should one wedge only be dropped it willforce the corresponding gib forward upon the cable, while the other gibwill be forced back solidly against the shoulders formed by plates 1).Thisdistance, however, being only enough for the parts to clearnormallysay, one-eighth of an inchthe gripping-action is quicklyaccomplished.

WVhat we claim is' l. The combination, with an elevator-car, of a safetygripping-support, gripping-jaws on the car surrounding such support, aloose gib in said jaws, and devices held out of ac? tion by the hoistingapparatus and acting when released to force the gib against thegripping-support, substantially as set forth.

2. The combination, with an elevator-car, of a safety gripping-support,gripping-jaws on the car surrounding such support, the loose gib, theroller, and the wedge connected with the hoisting apparatus,substantially as set forth.

3. The combination, with an elevator-car having hoist-ropes extendingaround the sides of the car, of saddles riding on horizontal sec tionsof the hoist-ropes, and connections between such saddles and the safetydevice for throwing such safety device into action when a hoist-ropebreaks or slackens, substantially as set forth.

4. The combination, with an elevator-car having hoist-ropes extendingaround the sides of the car, of saddles riding on horizontal sec tionsof said ropes, levers pivoted in said saddles, and the two sets ofcross-levers connect ing the sa ddle-levers with the safety devices,substantially as set forth.

5. The combination, with an elevator-car and safety gripping-support, ofthe grippingjaws and the double set of gripping devices in said jawsacting upon opposite sides of the said gripping-support, substantiallyas set forth.

6. The combination, with an elevator-ear and safety gripping-support, ofthe grippingjaws surrounding said support, loose gibs within said jawson opposite sides of the support, and two sets of rollers, and wedgesfor forcing such gibs against the support, substantially as set forth.

This specification signed and witnessed this 19th day of March, 1885. 7

\Vit ness es:

H. V. SEELY, N. XV. KIDDLE.

